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Important safety notes
In particular, the detection of obstacles can be
impaired in the case of:
dirt on the sensors or obscured sensors
R
snow or heavy rain
R
interference by other radar sources
R
strong radar reflections, for example, in multi-
R
storey car parks
a narrow vehicle travelling in front, e.g. a
R
motorcycle
a vehicle travelling in front on a different line
R
new vehicles or after servicing is carried out
R
on the Active Brake Assist system
Observe the important safety notes in the
"Running-in notes" section (
Following damage to the front end of the vehicle,
have the configuration and operation of the
radar sensor checked at a qualified specialist
workshop. This also applies to collisions at slow
speeds where there is no visible damage to the
front of the vehicle.
Activating/deactivating
Active Brake Assist is automatically active after
switching on the ignition.
You can activate or deactivate Active Brake
Assist using the on-board computer
(
page 207). When deactivated, the distance
Y
warning function and the autonomous braking
function are also deactivated.
If Active Brake Assist is deactivated, the æ
symbol appears in the assistance graphic dis-
play.
Distance warning function
General notes
The distance warning function can help you to
minimise the risk of a collision with the vehicle in
front or reduce the effects of such a collision. If
the distance warning function detects that there
is a risk of a collision, you will be warned visually
and acoustically.
Important safety notes
i
Observe the "Important safety notes" sec-
tion for driving safety systems (
G
The distance warning function does not react:
R
R
R
R
Thus, the distance warning function cannot
provide a warning in all critical situations.
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
G
page 131).
Y
The distance warning function cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning function
may:
R
R
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation; do not rely on the distance warning
function alone.
Function
The distance warning function issues a warning
at speeds:
R
R
X
or
X
page 62).
Y
Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause the system to display a warning.
Driving safety systems
WARNING
to people or animals
to oncoming vehicles
to crossing traffic
when cornering
WARNING
give an unnecessary warning
not give a warning
of approximately 30 km/h or more, if, over
several seconds, the distance maintained to
the vehicle travelling in front is insufficient.
The · distance warning lamp then lights
up in the instrument cluster.
of approximately 7 km/h or more, if you rap-
idly approach a vehicle in front. An intermit-
tent warning tone will then sound, and the
· distance warning lamp will light up in the
instrument cluster.
Brake immediately in order to increase the
distance from the vehicle in front.
Take evasive action provided it is safe to do
so.
65
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